Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Southern Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over the Northern Mariana Islands. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes through Tuesday. Heavy snow is expected in the Pacific Northwest. Read More >

Last Update: 508 AM EDT Tue Apr 14 2026

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Grand Rapids, MI Local Forecast Office

10NM SW South Haven MI

Marine Zone Forecast

Today
Southwest winds 15 to 25 knots. Rain showers likely and a slight chance of thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon. Waves 3 to 5 feet subsiding to 2 to 3 feet early in the afternoon.
Tonight
South winds 10 to 20 knots. Rain showers with thunderstorms likely. Patchy fog. Waves 1 to 3 feet.
Wednesday
Southwest winds 15 to 20 knots. Rain showers and a chance of thunderstorms. Patchy fog. Some thunderstorms may produce heavy rainfall. Waves 1 to 3 feet.
Wednesday Night
Southwest winds 10 to 15 knots. Rain showers and a chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Waves 1 to 2 feet.
Thursday
Southwest winds 15 to 20 knots. Rain showers likely. Waves 2 to 3 feet.
Friday
South winds 10 to 15 knots. Partly sunny. Waves 1 to 2 feet.
Saturday
South winds to 30 knots veering southwest early in the afternoon. Rain showers likely and a chance of thunderstorms. Waves 4 to 6 feet.



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508 AM EDT Tue Apr 14 2026
 
 

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